{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T03:52:17Z","timestamp":1784173937320,"version":"3.55.0"},"reference-count":20,"publisher":"Georg Thieme Verlag KG","issue":"S 01","funder":[{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD40512"],"award-info":[{"award-number":["HD40512"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD36801"],"award-info":[{"award-number":["HD36801"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD27869"],"award-info":[{"award-number":["HD27869"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD34208"],"award-info":[{"award-number":["HD34208"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD68268"],"award-info":[{"award-number":["HD68268"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD40485"],"award-info":[{"award-number":["HD40485"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD40500"],"award-info":[{"award-number":["HD40500"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD53097"],"award-info":[{"award-number":["HD53097"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD40560"],"award-info":[{"award-number":["HD40560"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD40545"],"award-info":[{"award-number":["HD40545"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD27915"],"award-info":[{"award-number":["HD27915"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD40544"],"award-info":[{"award-number":["HD40544"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD34116"],"award-info":[{"award-number":["HD34116"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD68282"],"award-info":[{"award-number":["HD68282"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD87192"],"award-info":[{"award-number":["HD87192"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD68258"],"award-info":[{"award-number":["HD68258"]}]},{"name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","award":["HD87230"],"award-info":[{"award-number":["HD87230"]}]},{"DOI":"10.13039\/100006108","name":"National Center for Advancing Translational Sciences","doi-asserted-by":"crossref","award":["UL1TR001873"],"award-info":[{"award-number":["UL1TR001873"]}],"id":[{"id":"10.13039\/100006108","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Perinatol"],"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n          Objective\u2003The aim of the study is to evaluate the association between amniotomy at various time points during labor induction and maternal and neonatal outcomes among term, nulliparous women.<\/jats:p><jats:p>\n          Study Design\u2003Secondary analysis of a randomized trial of term labor induction versus expectant management in low-risk, nulliparous women (2014\u20132017) was conducted. Women met inclusion criteria if they underwent induction \u226538 weeks' gestation using oxytocin with documented time and type of membrane rupture. Women with antepartum stillbirth or fetal anomaly were excluded. The primary outcome was cesarean delivery. Secondary outcomes included maternal and neonatal complications. Maternal and neonatal outcomes were compared among women with amniotomy versus women with intact membranes and no amniotomy at six 2-hour time intervals: before oxytocin initiation, 0 to &lt;2\u2009hours after oxytocin, 2 to &lt;4\u2009hours after, 4 to &lt;6\u2009hours after, 6 to &lt;8\u2009hours after, and 8 to &lt;10\u2009hours after. Multivariable logistic regression adjusted for maternal age, body mass index, race\/ethnicity, modified Bishop score on admission, treatment group, and hospital (as a random effect).<\/jats:p><jats:p>\n          Results\u2003Of 6,106 women in the parent trial, 2,854 (46.7%) women met inclusion criteria. Of these 2,340 (82.0%) underwent amniotomy, and majority of the women had amniotomy performed between 2 and &lt;6\u2009hours after oxytocin. Cesarean delivery was less frequent among women with amniotomy 6 to &lt;8\u2009hours after oxytocin compared with women without amniotomy (21.9 vs. 29.7%; adjusted odds ratio 0.61, 95% confidence interval 0.42\u20130.89). Amniotomy at time intervals \u22654\u2009hours after oxytocin was associated with lower odds of labor duration &gt;24\u2009hours. Amniotomy at time intervals \u22652\u2009hours and &lt;8\u2009hours after oxytocin was associated with lower odds of maternal hospitalization &gt;3 days. Amniotomy was not associated with postpartum or neonatal complications.<\/jats:p><jats:p>\n          Conclusion\u2003Among a contemporary cohort of nulliparous women undergoing term labor induction, amniotomy was associated with either lower or similar odds of cesarean delivery and other adverse outcomes, compared with no amniotomy.<\/jats:p>","DOI":"10.1055\/s-0040-1709464","type":"journal-article","created":{"date-parts":[[2020,4,16]],"date-time":"2020-04-16T23:02:39Z","timestamp":1587078159000},"page":"e239-e248","source":"Crossref","is-referenced-by-count":8,"special_numbering":"S","title":["Maternal and Neonatal Outcomes Associated with Amniotomy among Nulliparous Women Undergoing Labor Induction at Term"],"prefix":"10.1055","volume":"38","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4837-8059","authenticated-orcid":false,"given":"Ashley N.","family":"Battarbee","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Grecio","family":"Sandoval","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, The George Washington University Biostatistics Center, Washington, District of Columbia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"William A.","family":"Grobman","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Northwestern University, Chicago, Illinois"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Uma M.","family":"Reddy","sequence":"additional","affiliation":[{"name":"The Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, Maryland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alan T.N.","family":"Tita","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, Alabama"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert M.","family":"Silver","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, University of Utah Health Sciences Center, Salt Lake City, Utah"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yasser Y.","family":"El-Sayed","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Stanford University, Stanford, California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ronald J.","family":"Wapner","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Columbia University, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dwight J.","family":"Rouse","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Brown University, Providence, Rhode Island"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"George R.","family":"Saade","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston, Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Suneet P.","family":"Chauhan","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, University of Texas Health Science Center at Houston-Children's Memorial Hermann Hospital, Houston, Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jay D.","family":"Iams","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, The Ohio State University, Columbus, Ohio"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edward K.","family":"Chien","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, MetroHealth Medical Center-Case Western Reserve University, Cleveland, Ohio"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Brian M.","family":"Casey","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ronald S.","family":"Gibbs","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, University of Colorado School of Medicine, Anschutz Medical Campus, Aurora, Colorado"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sindhu K.","family":"Srinivas","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, Pennsylvania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Geeta K.","family":"Swamy","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Duke University, Durham, North Carolina"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyagriv N.","family":"Simhan","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, University of Pittsburgh, Pittsburgh, Pennsylvania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"name":"for the Eunice Kennedy Shriver National Institute of Child Health Human Development Maternal-Fetal Medicine Units (MFMU) Network","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2020,4,16]]},"reference":[{"issue":"155","key":"ref1","first-page":"1","article-title":"Recent declines in induction of labor by gestational age","author":"M JK Osterman","year":"2014","journal-title":"NCHS Data Brief"},{"issue":"06","key":"ref2","doi-asserted-by":"crossref","first-page":"513","DOI":"10.1056\/NEJMoa1800566","article-title":"Labor induction versus expectant management in low-risk nulliparous 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cervical ripening","volume":"49","author":"M JNC Keirse","year":"2006","journal-title":"Clin Obstet Gynecol"}],"container-title":["American Journal of Perinatology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.1055\/s-0040-1709464.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,5]],"date-time":"2024-11-05T16:02:22Z","timestamp":1730822542000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.1055\/s-0040-1709464"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,4,16]]},"references-count":20,"journal-issue":{"issue":"S 01","published-online":{"date-parts":[[2021,8,27]]},"published-print":{"date-parts":[[2021,8]]}},"URL":"https:\/\/doi.org\/10.1055\/s-0040-1709464","archive":["Portico","CLOCKSS"],"relation":{},"ISSN":["0735-1631","1098-8785"],"issn-type":[{"value":"0735-1631","type":"print"},{"value":"1098-8785","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,4,16]]}}}